An Analog Fan

I often like to guess what concepts are before reading descriptions because I enjoy the surprise in being totally off-base. This Analog Fan uses an old trick with gears and pulleys to generate enough power for 5 minutes of hair blowing wind. Not meant to cool a room down but it keeps air moving and all without electricity. By the way, I originally thought it was a clock.

19 Comments

Physics still apply. The device doesn't generate any power, (I assume you mean "energy"), but instead merely release over a period of 5 minutes the energy stored in it by pulling the cord.

The cord ain't long, let's say one meter (it looks shorter, but let's give the benefit of the doubt), and if this thing is hanging on the wall, you can't require a pull-force much higher than say 50N (that's aproximately the force needed to lift 10 pounds)

50N over 1m, gives 50J of available energy. That is ridicolously miniscule. 5 minutes is the same thing as 300 seconds, so 50J released over 300 seconds, give an actual power of 0.17w

That does in no way shape or form create a "hair blowing wind", it wouldn't even make a candle held immediately in front of the propeller even flutter. And this is extremely generous, it assumes the device is 100% efficient, which it offcourse can't be.

Physics still apply. The device doesn't generate any power, (I assume you mean “energy”), but instead merely release over a period of 5 minutes the energy stored in it by pulling the cord.

The cord ain't long, let's say one meter (it looks shorter, but let's give the benefit of the doubt), and if this thing is hanging on the wall, you can't require a pull-force much higher than say 50N (that's aproximately the force needed to lift 10 pounds)

50N over 1m, gives 50J of available energy. That is ridicolously miniscule. 5 minutes is the same thing as 300 seconds, so 50J released over 300 seconds, give an actual power of 0.17w

That does in no way shape or form create a “hair blowing wind”, it wouldn't even make a candle held immediately in front of the propeller even flutter. And this is extremely generous, it assumes the device is 100% efficient, which it offcourse can't be.

I love the direction of bringing household appliances into a 2d fashionable form. Maybe you could make it act and look functional, but add the effect through completely different means. Using material other then wood might be a good idea as you can build them up on the inside. You pull the cord it spins, but what goes on inside and where air comes from could be completely something else. Cheers

I love the direction of bringing household appliances into a 2d fashionable form. Maybe you could make it act and look functional, but add the effect through completely different means. Using material other then wood might be a good idea as you can build them up on the inside. You pull the cord it spins, but what goes on inside and where air comes from could be completely something else. Cheers

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Thanks for sharing. It is impressive. By the way, we are an online shop wholesale china electronics such as mobile phones, tablet PC, mp3 player and so on. You are welcome to visit our shop for any shopping purpose. Have a nice day.